Multi-Saloon Booking App Development

I need a mobile app for both iOS and Android that serves as a booking platform for multiple salons and spas. The app should include:

- Appointment scheduling
- Customer reviews
- Payment integration via Credit/Debit cards, Stripe, and Viva Wallet
-loyalty points

Ideal skills and experience:
- Mobile app development for iOS and Android
- Experience with payment gateway integration
- UI/UX design for a user-friendly booking experience
- Backend development to manage multiple salons/spas and their data

Please provide a portfolio and relevant experience.